               :armor 8
               :repair 1
               :state-map :free-attack-twice
+              :buildable-at #{:base}
               :image "tilesets/elite-command/units/humvee-COLOR.png"
               :terrain-effects
               {:plains  {:movement-cost 3  :armor-bonus  0 :attack-bonus  0}

               :armor 15
               :repair 1
               :state-map :move-attack
               :image "tilesets/elite-command/units/cruiser-COLOR.png"
               :terrain-effects
               {:sea     {:movement-cost 1 :armor-bonus 0 :attack-bonus 0}

               :armor 8
               :repair 1
               :state-map :free-attack-twice
               :buildable-at #{:seaport}
               :image "tilesets/elite-command/units/frigate-COLOR.png"
               :terrain-effects
               {:sea           {:movement-cost 1 :armor-bonus 0 :attack-bonus 0}
